Flow amount detector



FIG. 1 is a top, front and left-side perspective view of a flow amountdetector showing our new design;

FIG. 2 is a front view thereof, the rear view being a mirror image ofthe front view;

FIG. 3 is a right side view thereof, the left side view being anidentical image of the right side view;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a flow amount detector, as shown anddescribed.